\vskip10pt
\begin{table}[h]
	\centering
	\caption{QoS Classes [8]}
		\begin{tabular}{ | p{4cm} | l | l |}
			\hline
			QoS category	& Applications &	QoS specifications \\ \hline
			UGS Unsolicited grant service &	VoIP	& Maximum sustained rate\\ 
																						&&	Maximum latency tolerance\\
																						&& Jitter Tolerance\\ \hline
			rtPS Real-time polling service &	Streaming audio or video	& Minimum reserved rate\\
																																&&	Maximum sustained rate\\
																																&& Maximum latency tolerance\\
																																&& Traffic priority\\ \hline
			nrtPS Non-real-time polling service	&File transfer Protocol (FTP)	&Minimum reserved rate\\
																																				&&Maximum sustained rate\\
																																				&&Traffic priority\\ \hline
			BE Best effort service	&Data transfer,& Maximum sustained rate \\
			&Web browsing, etc.	&Traffic priority\\ \hline
		\end{tabular}
	\label{tab:QoSClasses}
\end{table}
\clearpage